leish elish liesh ilesh eilsh ielsh lesih elsih lseih sleih eslih selih liseh ilseh lsieh slieh isleh sileh eislh ieslh esilh seilh iselh sielh leihs elihs liehs ilehs eilhs ielhs lehis elhis lheis hleis ehlis helis lihes ilhes lhies hlies ihles hiles eihls iehls ehils heils ihels hiels leshi elshi lsehi slehi eslhi selhi lehsi elhsi lhesi hlesi ehlsi helsi lshei slhei lhsei hlsei shlei hslei eshli sehli ehsli hesli sheli hseli lishe ilshe lsihe slihe islhe silhe lihse ilhse lhise hlise ihlse hilse lshie slhie lhsie hlsie shlie hslie ishle sihle ihsle hisle shile hsile eishl ieshl esihl seihl isehl siehl eihsl iehsl ehisl heisl ihesl hiesl eshil sehil ehsil hesil sheil hseil ishel sihel ihsel hisel shiel hsiel
Note: these 'words' (valid or invalid) are all the permutations of the word leish. These words are obtained by scrambling the letters in leish.